Nordmarka is the mostly forested region which makes up the northern part of Oslo, Norway. The area called "Nordmarka" also extends into the municipalities of Hole, Ringerike, Lunner, Jevnaker and Nittedal.[1] It is the largest part of the Marka borough. The forests are popular sites for hiking and skiing. Most of the forests are protected, and it is not possible to obtain building permits for cottages in the area.
There are several lakes in Nordmarka, which are used as a supply for drinking water, largest of these is the Maridalsvannet. Svarttjernshøgda in Jevnaker is the highest point in Jevnaker, at a height of 717 m.[2]
The first element is nord 'north', the last element is the finite form of mark f 'woodland, forest'. The name is first mentioned on a map from 1760.